Type-writing machine



(No Model.) 2 sheets-snee# 1. J. F. MGLAUGI-ILIN.

TYPE WRITING MACHINE.

2. .fu e e h s H Dv e h S 2 NM um HM GM. UG AAN LH GI Mm im Jn q. d 0 MO m No. 421,887. Patented Feb. 18, 1890 WITNESSESZ UNITED `STATES PATENTEEICE.

JAMS F. MCLAUGHLIN, OFPI-IILADELPHIA, PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 421,837, dated February18, 1890.

Application filed February 18 1889. Serial No. 300,254. (No model.) A

kTo all whom t may concern:

Be it known that I', JAMES F. MCLAUGH LIN, a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Type-lVriting Machines, of which the following is a specification.

This invention has relation to that class of type-writing machines inwhich a traveling carriage supporting the impression-cylinder is fedforward the space of one letter after each imprint of a type upon thepaper, or upon the depression of a speciallyfprovided letter-spacingkey; and its special object is to provide a novel means for causing thecarriage to be automatically returned to its starting-point when the endof a line of printing or Writing has been reached.

In an application filed by me June 5, 1888, Serial No. 276,151, and inanother application filed September 19, 1888, Serial No. 285,819,I haveshown and described automatic reverse movements for the carriage of atype-writer, and the invention herein shown and described is animprovement on the same, the specific points of novelty of which will`clearly appear from the following detailed description with referenceto the accompanying drawings, which form a part hereof, and in which-Figure 1 isa plan View of the frame of a typewriter carriage embodying1my improvements, and showing only so much of the carriage as isnecessary to illustrate the invention. is a rear elevation of thecarriage with parts broken away and in section. Fig. 3 is a transversesection taken -on the line 5c @c in Fig. 1. Fig. et is a detail viewofthe supporting-rod and one of its sustaining-brackets, the rod beingshown in section on the line y y of Fig. 2. Fig. 5 is a detail sectionalview of the movable casting in position on the rear sliding bar, andFig. 6 is a detail View of one of the pins for securing thesupporting-rod on its brackets.`

Like numerals of reference indicate corresponding parts in all thefigures of the drawings.

The frame 1 of the carriage is rectangular in shape, being composed ofthe front and rear bars 2 and 3 and the side bars i and 5, andconstructed essentially the same as shown Fig. 2

and described in my aforesaid applications. The carriage is supported atthe front by an anti-friction roller 6', journaled to the front bar 2Yabout midway of its length and arranged in a manner well understood bythose skilled in the art to which this invention relates, to' travel ona track on the main frame of the type-writer. At the rear the carriageis supported on a trackv or rod 6 by means of anti-friction fiangedrollers 7 7, journaled on screws, as shown, entering bearing-blocks 7 7,erected on the rear bar 3 near each end thereof.

To prevent the accidental removal of the carriage from the rod 6, Iprovide yoke-shaped brackets 8 8, projecting rearward from the rear bar3 and embracing the rod 6, as shown in Fig. S-that is, the bracketsextend above and below the rod 6, in proximity thereto,

and preventA vertical displacement of the carriage, while the flanges onthe rollers 7 7, it will be seen, prevent lateral displacement of thecarriage. It will also be seen that if otherwise unobstructed thebrackets 8 8 and rollers 7 7 in no wise interfere with the 1ongitudinalmovement of the carriage on the rod 6.

The carriage is provided with a rackbar 9, forming an integral part of arack-bar frame, which is rectangular in shape and composed of' the saidrack-bar, end pieces 10 10, projecting from the ends of the rack-bar,and a rod 11, which extends through the free. ends of the pieces 10 10and has its projecting portions journaled in bearings formed in brackets12 12, secured to the under side of the end bars 4; 5 of thecarriage-frame.

On the upper side of the rack-bar 9 is a screw 13, and the notched orbifurcated end of a iiat spring 14 is arranged" to straddle the shank ofthis screw between its head andthe top of the rack-bar. The springpasses over a screw-rod 15, (the purpose of which will be hereinafterindicated,) and from thence under the rod 11. The tendency of thisspring is to lift the rack-bar by turning the frame on its axis-that is,to move it on the axis formed by the rod 11.

The brackets 12 12 are recessed on their upper surfaces, as indicated inFig. l2, to form bearings between the brackets and the under surfaces ofthe end bars 4 5 for a sliding bar IOO 16, located at the rear of thecarriage, and which I therefore designate the rear sliding bar. This bar1G has formed in it, near each end, a notch or recess 17, with one sideinclined 0r beveled, making the recess flaring from the upper face ofthe bar downwardly, as shown at 1S, and beyond the recesses 17 the saidbar passes into the recesses in the brackets 12 12 and is supportedthereby, but is free to move longitndinallyin said recesses if otherwiseunobstructed.

Each end piece 10 10 of the rack-barframe has raised on its uppersurface a beveled lug ortooth 19, with the inclination of the beveledface at the same angle as the inclined side 18 of the corresponding`recess 1.7. These lugs are in line with the recesses 17 and restnormally against the under side of the bar 16, being held thereto by theaction of the spring 1l exerted on the rack-bar frame. New it will beseen that if the barlG is moved longitudinally until the recesses 17 areover the lugs 19, as shown in Fig. 1, thelatter will enter the saidrecesses and the raclebar 9 will be lifted by the action of the spring'1a, and if the bar 1G be then moved in the contrary direct-ion theinclined sides of the recesses 17 will engage and ride over the inclinedor beveled faces of the lugs 19 and force the rack-bar frame downwardagainst the action of the spring until the lugs bear `on the undersurface of the rear sliding bar 1G, as shown in Fig. 2. Theseconstructions, together with their operation and purposes, are fully setforth in my former application, Serial No. 285,819.

Mounted upon the rear sliding bar 1G is a casting 2 )rovided with alateral slot 21, for the passage of the said bar, and withadownwardlyprojecting tail-piece 22, arranged as in my said formerapplications, to make contact with a xed lug (not shown) on the mainframe of the typewriter and in the line of the travel of the saidtail-piece as it moves along with the carriage. The casting 20 carries ascrew-rod 23, which passes through a nut 23 on the upper part of thecasting above the slot, and enters the latter, where it bears on amovable jaw or follower 2-1, located within the slot and held therein byits upt-urned ends 25, arranged to embrace the sides ot' the casting.The casting is adjusted along the rod by means of an arm 26,'formed onand projecting froma boss 2S of one of two paper-guides 29 29, andprovided with a forked end 27, constructed to embrace the casting 20,but with the forks a sufficient distance apart to allow the casting toremain relatively iixed, while the carriage with the arm 2G may move alimited distance, as will hereinafter appear. The guides 29 areadjustable, as described in my former applications, by means ofright-andleft-handed screws 30 31 on the rod 15 and passing through nutsformed in the bosses 28. rlhe rod 15 is journaled in the side bars 4 5and extends beyond the bar 5, where it is provided with a milled head32, by means of which it may be rotated. It will now be understood thatby rotating the rod,` 15 the paper-guides 29 will be adjusted toward ormoved from each other, and simultaneously with such adjustment thecasting will be moved along the bar 19. lVhen at the desired point, thecasting is clamped to the bar 16 by manipulating the screw-rod 23 toforce' the follower 24 into frictional contact with the said bar. Therod 23 is continued upward infront of and above the scale-frame 33, andis provided with a milled head 34C', by means of which it may bemanipulated, as described. The screw-rod 23, it will be seen, serves asa pointer or indicator for the scale.

The casting, as in my former applications, is for the purpose ofdetermining the end of the line and is adjusted on the bar to thedesired point on the scale to fix the length of line to be printed, andis then clamped to the bar; but while in my former machine the castinghad to be adjusted independently of the papenguides the adjustment ofthe latter in my present improvement also adjusts the casting to therequired position. This is an advantage, since it obviates the necessityof adjust-ment of two parts irnlependently, which in ordinary use shouldalways have an approximate relative position, the end of a line ofprinting being preferably a certain distance from the edge of the paper,what ever the width of the same may be.

The end of the rear sliding bar 1G adjacent to the side bar 4ireceivesthe downwardlyprojecting end 34 of a lever $35, centrally pivoted by ascrew or other suitable means to a lug 36, projecting inward from theside bar 4; of the carriage. rlhe other end of the lever 35 is connectedbya knuckle-joint 37 with another lever 3S, centrally pivoted to a lng39, projecting from the side bar l-. Thejoint 37 may be aball-and-socket jointwith a li1nited longitudinal play to permit thejoined ends of the levers to pass to either side of the central line, orany other suitable joint may be used. By preference I use theknucklejoint construction shown in Fig. 1, where the lever 35 terminateswith a circular head 37 and the corresponding end of lever 3S with acircular recess 38, which is of greater diameter than the head 37',which it receives. The lever 3S has its other or 't'ree end turneddownward to form a finger LtO (indicated in Fig. 3) in the line oftravel of a slidingbar 41, mounted on the front bar 2 of thecarriageframe, and which I therefore designate the front sliding bar.This bar 4:1 is movable longitudinally on the inner side of the frontbar2 and passes through a bearing in the side bar 5. It is providedbeyond the side bar 5 with a head 42 to operate the line-spacingmechanism; but neither the construction of the head nor the saidline-spacing mechanism is shown or described in this application, asthey form no partof this invention and are fully shown and described inmy forlner ap- TOO IOS

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plications. The bar 41-may be rectangular in shape' for a portion of itslength, and is then reduced to a cylindrical form, as shown at 42 toenter a sleeve 43, fixed on the front bar 2. Beyond t-his cylindricalportion 42 the bar 41 is still further reduced for the remainder of itslength, as shown at 44, which reduced portion extends through and beyondthe end of the sleeve 43. The part 44 of the bar is of sufficient lengthto extend normally within a short distance of the finger 40 of the.

lever 38, and is surrounded within the sleeve 43 by a helical spring 45,abutting against the end of the sleeve and the cylindrical portion 42 ofthe bar, respectively. The rectangular part of the bar 41` is providedwith a hookshaped lug 46, projecting over the front bar 2, and arrangedto come in contact with a stop (not shown) on the main frame of thetypewriter when the carriage moves toward the right. Assuming that thecasting 2O has been adj usted as desired and clamped to the bar 16, thenas the carriage is moved forward by the feed mechanism engaging therack-bar 9 and operated through suit-able intermediate mechf anism fromthe typelevershsuch, for instance, as shown in my former applications,and therefore not shown herein-the tail-piece 22 of the casting will bebrought into contact with the iixed lug on the main frame, hereinbeforereferred to. This lug holds the-caste ing and the bar 16,-to which it isattached, against further movement while the carriage is still fedforward. This travel of the carriage continues until the beveled orprismatic lugs 19 on the end pieces 10 of the rack-bar frame are broughtunder the recesses 17 in the sliding bar 16, when the said rack-barframe will be turned on its axis by the spring 14 forcing the lugs19-into the recesses 17 and lifting the rack-bar from the feedmechanism. The carriage on being released from the feed mechanism isimmediately returned to its normal position-that is, to the beginning ofa line--by any suitable mechanism--such,

for instance, as the barrel-spring shown and.

described in my former application, Serial No. 285,819. Before thereturn movement of the carriage is completed the lug 46 on thefrontsliding bar 41 comes in contact with the iixed stop in its path,and the said bar is held against further movement while the carriagecontinues its retrograde travel. The spring 45 is thereby compressedbetween the end of the sleeve 43 and the cylindrical portion 42 of thebar 41 and the portion 44 of the bar is brought into contact with thefinger 40. The outer ends of the levers 35 38, it will be seen, andconsequently the rear sliding bar 16,will thus be held stationary duringthe remainder of the retrograde movement of the carriage, while thepivots of the levers and their knuckle-joined ends will move with thecarriage until these levers assume the relative position shown in dottedlines in Fig. 1. The rear sliding bar 16 being held stationary, it willbe seen that as the carriage carries the rack-bar frame along with itduring its return movement the lugs 19 willeventually be forced down theinclined sides 18 until theybear on the underside of the bar 16, thusdepressing the rack-bar frame against the action of the spring 14 andagain bringing' the rack-bar into operative connection with the feedmechanism. When the carriage is again moved forward, the bar 41 isreturned to its normal position by the recoil of the spring 45. On theretrograde movement of the carriage the head'42 of the bar 41 willoperate the linespacing mechanism, as fully shown and described in myformer application, Serial No.

285,819, whichv for the purposes of this case need not be considered.

- It will be seen from the foregoing description that I effect there-engagement of the rack-bar with the feed mechanism by intermediatedevices between the front and rearV A sliding bars, that have a positiveand direct, action in the plane of movement of the carriage, `requiringbut little power to operate them, while in my former machine theseintermediate devices were operated by cam mechanism which was indirectin its action and partly in a plane at right angles to the movement ofthe carriage, and required much more power than the devices shown in thepresent application. The track or rod 6 is mounted near each end onbrackets 47 each hinged near one end, as shown at 48, Fig. 4, to a post49 or other support fixed Vto the main frame.

In order that the carriage may be quickly` and readily removed from themain frame, I provide each bracket 47, near its free end, with anupwardlynprojecting stud 50, having near the top an orifice or hole 51,as shown in Fig. 4. Each stud 50 passes intoahole or recess in the trackor rod 6 and intersects a central passage 52, extending fromthe end ofthe said rod to a point a short distance beyond said point ofintersection by the stud. Within each passage 52, I insert a pin 53,*provided with a head 54, by which it may be manipulated. This pin hasformed in one side a recess 55, into which extends the end of a screw56, passing through the side of the said rod 6, and which, it will beunderstood, acts asa stop to limit the longitudinal movement of the pinand prevents its accidental removal from the rod. Each pin has atapering end 57, to pass through the holes 51 in the studs 50, and thus-the two pins lock the rod 6 to the brackets 47. The tapering ends ofthe pins may be split, as shown in Fig. 6, to insure the frictionalcontact of the pins and studs and prevent the pins from becoming loosefrom wear. Thus the carriage is held to the main frame by the pins 53locking the track to the frame of the machine, and by withdrawing thepins from the studs the carriage and its track or rod may be liftedfromthe brackets 47 andre moved from the machine.-

Having n ovv fully described my invention,

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and without limiting myself to the precise construction shown, I claimandv desire to secure by Letters Patentl. In a type-writer having acarriage-feed and automatic return mechanism, the combination of araek-barmounted upon the carriage and actuated by the said feedmechanism, with two sliding bars for throwing the rack-bar into and outof gear with the carriage -feed mechanism, and a system of jointedlevers in operative relation to both sliding bars, substantially asdescribed.

2. In a typewriter having a carriagefeed and automatic return mechanism,the combination of a rack-bar mounted upon the carriage and actuated bythe said feed mechan ism, with two sliding bars for throwing` therack-bar into and out of gear with the carriagefced mechanism, and asystem of j ointcd levers in operative relation to both sliding bars andmovable in the plane of the travel of the carriage, substantially asdescribed.

In a type-writer having a carriage-feed and automatic return mechanism,the combination of a rack-bar mounted upon the carriage and actuated bythe said feed mechananism, with two sliding bars for throwing therack-bar into and out of gear with the'earriage-feed mechanism, and twojointed levers, one in positive engagement with one sliding bar and theother with its free end in operative relation to one end of the othersliding bar, substantially as described.

4. In a typewriter having a carriage-feed and automatic returnmechanism, and a rackbar upon the carriage actuated by said feedmechanism, the combination of a sliding bar controlling the movement ofthe said raclo bar into and out of gear with the feed mechanism, acasting adjustable on said sliding bar for shifting the bar on thecarriage at the end of a line of printing, and an adjustable paper-guideon thc carriage connected to the casting to eifect its adjustmentsimultaneously with that of the paper-guide, substantially as described.

5. In a type-writer having a carriage-feed an d automatic returnmechanism, and a rackbar upon the carriage actuated by said feedmechanism, the combination of a sliding bar controlling the movement ofthe rack-bar into and out of gear with the feed mechanism, a castingadjustable on the sliding bar and arranged to shift the bar ou thecarriage as the latter is fed forward and approaches the end of a lineof printing, with an adjustable paper-guide on lthe carriage andconnections between the guide and casting constructed to move the lattersimultaneously with the adjustment of the paper-guide and admit of alimited independent movement of the casting, substantially as described.

(i. In a type-writer having a carriage-feed and automatic returnmechanism, and a rackbar upon the carriage actuated by the said feedmechanism, the combination of a sliding bar controlling the movement ofthe rackbar into and out of gear with the feed mechanism, with a fixedscale-frame adjacent to the bar, and a casting adj ustable on the barand arranged to shift t-he bar on the carriage as the lattter is fedforward and having a clamp-screw with a stem extended upward in front ofthe scale-frame to serve as an indicator or pointer therefor,substantially as described.

7. In a typewriter, the combination, with the main frame, of a carriage,a track on which the carriage travels and provided with passagesextending inward from the ends, perforated studs supported on the mainframe and constructed to intersect said passages in the track, andlocking-pins fitted to said pas sages and perforations, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES lf. MGLA'UGI'ILIN'.

Witnesses:

JULIUs IIIRSHFELD, 'FRANK J. ill. MILLER.

